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1.发明授权Bridge circuit magnetic field sensor having spin valve magnetoresistive elements formed on common substrate 失效桥式电路磁场传感器具有形成在公共基板上的自旋阀磁阻元件
公开(公告)号：US5561368A
公开(公告)日：1996-10-01
申请号：US334659
申请日：1994-11-04
CPC分类号： B82Y25/00 , G01R33/093
摘要： A magnetic field sensor uses four individual magnetoresistive spin valve elements electrically connected in a bridge circuit. The spin valve elements are lithographically formed on the same substrate with their free layers having their magnetization axes parallel to one another. An electrically conductive fixing layer is formed on the substrate but is insulated from the spin valve elements. The application of current through the fixing conductor during fabrication of the field sensor fixes the direction of magnetization of two of the pinned layers to be antiparallel to the direction of magnetization of the other two pinned layers. The bridge circuit output voltage is responsive to an external magnetic field in the plane of the sensor. By appropriate fixing of the direction of magnetization of the pinned layers during sensor fabrication, and appropriate connection to the input and output leads, the bridge circuit output voltage is a measure of either the magnetic field or field gradient. The fixing conductor, or a separate current strap formed on the substrate, can be used to pass an unknown current over the sensor, in which case the bridge circuit output voltage is a measure of the unknown current.
摘要翻译： 磁场传感器使用在桥式电路中电连接的四个单独的磁阻自旋阀元件。 自旋阀元件光刻地形成在相同的基板上，其自由层的磁化轴线彼此平行。 在基板上形成导电固定层，但与自旋阀元件绝缘。 在场传感器的制造期间通过固定导体的电流的施加将两个被钉扎层的磁化方向固定成与其他两个钉扎层的磁化方向反平行。 桥接电路输出电压响应于传感器平面内的外部磁场。 通过在传感器制造期间适当地固定被钉扎层的磁化方向，以及适当地连接到输入和输出引线，桥接电路输出电压是磁场或场梯度的量度。 可以使用固定导体或形成在基板上的单独的电流带将传感器上的未知电流传递，在这种情况下桥接电路输出电压是未知电流的量度。
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2.发明授权Method and apparatus for reducing readback errors by controlling the phase locked loop 失效通过控制锁相环来减少回读误差的方法和装置
公开(公告)号：US5625506A
公开(公告)日：1997-04-29
申请号：US641342
申请日：1996-05-01
CPC分类号： G11B20/1403 , G11B20/1816
摘要： A method and apparatus are provided for maintaining file readback performance compensating for readback errors caused by head/disk interaction used with a data detection channel in a direct access storage device. A readback signal is sensed from at least one disk surface and a data channel error rate is detected responsive to the readback signal. The detected data channel error rate is compared with a first predetermined threshold value and a gain of a phase lock loop (PLL) in the peak data detection channel is optimized responsive to an identified data channel error rate with a first predetermined threshold value. The PLL gain is adjusted until a lowest error rate is detected. A failure warning for the direct access storage device is provided to a user when the detected PLL gain is greater than a predefined loop gain value.
摘要翻译： 提供了一种用于维护文件回读性能的方法和装置，其补偿由直接访问存储设备中的数据检测通道使用的头/盘交互引起的回读错误。 从至少一个盘表面感测回读信号，并且响应于回读信号检测数据信道错误率。 将检测到的数据信道错误率与第一预定阈值进行比较，并且响应于具有第一预定阈值的所识别的数据信道错误率来优化峰值数据检测通道中的锁相环（PLL）的增益。 调整PLL增益，直到检测到最低的错误率。 当检测到的PLL增益大于预定义的环路增益值时，向用户提供对直接存取存储设备的故障警告。
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公开(公告)号：US08736081B2
公开(公告)日：2014-05-27
申请号：US13573201
申请日：2012-08-30
申请人： John S. Foster , Christopher S. Gudeman , Alok Paranjpye , Jaquelin K. Spong , Douglas L. Thompson
发明人： John S. Foster , Christopher S. Gudeman , Alok Paranjpye , Jaquelin K. Spong , Douglas L. Thompson
IPC分类号： H01L23/28
CPC分类号： H01L23/10 , B81C1/00269 , B81C2203/0118 , B81C2203/019 , H01L21/50 , H01L2924/01079 , H01L2924/16235 , H01L2924/163
摘要： Systems and methods for forming an encapsulated device include a hermetic seal which seals an insulating environment between two substrates, one of which supports the device. The hermetic seal is formed by an alloy of two metal layers, one deposited on a first substrate and the other deposited on the second substrate. At least one of the substrates may include a raised feature formed under at least one of the metal layers. The two metals may for an alloy of a predefined stoichiometry in at least two locations on either side of the midpoint of the raised feature. This alloy may have advantageous features in terms of density, mechanical, electrical or physical properties that may improve the hermeticity of the seal, for example.
摘要翻译： 用于形成封装装置的系统和方法包括密封两个基板之间的绝缘环境的气密密封件，其中之一支撑该装置。 气密密封由两个金属层的合金形成，一个沉积在第一基板上，另一个沉积在第二基板上。 衬底中的至少一个可以包括形成在至少一个金属层下面的凸起特征。 两种金属可以在凸起特征的中点的任一侧上的至少两个位置中具有预定化学计量的合金。 例如，该合金在密度，机械，电学或物理性质方面可能具有有利的特征，这可以改善密封的气密性。
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公开(公告)号：US20120319303A1
公开(公告)日：2012-12-20
申请号：US13573201
申请日：2012-08-30
申请人： John S. Foster , Alok Paranjpye , Douglas L. Thompson , Christopher S. Gudeman , Jaquelin K. Spong
发明人： John S. Foster , Alok Paranjpye , Douglas L. Thompson , Christopher S. Gudeman , Jaquelin K. Spong
CPC分类号： H01L23/10 , B81C1/00269 , B81C2203/0118 , B81C2203/019 , H01L21/50 , H01L2924/01079 , H01L2924/16235 , H01L2924/163
摘要： Systems and methods for forming an encapsulated device include a hermetic seal which seals an insulating environment between two substrates, one of which supports the device. The hermetic seal is formed by an alloy of two metal layers, one deposited on a first substrate and the other deposited on the second substrate. At least one of the substrates may include a raised feature formed under at least one of the metal layers. The two metals may for an alloy of a predefined stoichiometry in at least two locations on either side of the midpoint of the raised feature. This alloy may have advantageous features in terms of density, mechanical, electrical or physical properties that may improve the hermeticity of the seal, for example.
摘要翻译： 用于形成封装装置的系统和方法包括密封两个基板之间的绝缘环境的气密密封件，其中之一支撑该装置。 气密密封由两个金属层的合金形成，一个沉积在第一基板上，另一个沉积在第二基板上。 衬底中的至少一个可以包括形成在至少一个金属层下面的凸起特征。 两种金属可以在凸起特征的中点的任一侧上的至少两个位置中具有预定化学计量的合金。 例如，该合金在密度，机械，电学或物理性质方面可能具有有利的特征，这可以改善密封的气密性。
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公开(公告)号：US20120255373A1
公开(公告)日：2012-10-11
申请号：US13506892
申请日：2012-05-23
申请人： John S. Foster , Daryl W. Grummitt , John C. Harley , James P. Linton , Jaquelin K. Spong , Douglas L. Thompson
发明人： John S. Foster , Daryl W. Grummitt , John C. Harley , James P. Linton , Jaquelin K. Spong , Douglas L. Thompson
IPC分类号： G01N1/28
CPC分类号： C12M47/04 , B01L3/502761 , B01L7/52 , B01L2200/0652 , B01L2300/0816 , B01L2400/043 , B01L2400/0439 , B01L2400/0478 , G01N2015/1081 , G01N2015/149
摘要： A disposable cartridge is described which is equipped with a plurality of microfabricated particle sorting structures. The disposable cartridge may include passageways which connect fluid reservoirs in the cartridge with corresponding microfluidic passageways on the particle sorting structure. A flexible gasket may prevent leakages and allow the fluid to cross the gasket barrier through a plurality of holes in the gasket, allowing fluid to be transferred from the reservoirs to the microfabricated particle sorting structures. The plurality of particle sorting structures may be arranged in the disposable cartridge in order to perform multiple separation operations, such as a sequential or parallel sorting operation.
摘要翻译： 描述了配备有多个微加工颗粒分选结构的一次性盒。 一次性药筒可以包括将药筒中的流体储存器与颗粒分选结构上的相应的微流体通道连接的通道。 柔性垫片可以防止泄漏并允许流体通过垫圈中的多个孔穿过垫圈屏障，允许流体从储存器转移到微加工颗粒分选结构。 多个颗粒分选结构可以布置在一次性盒中，以便执行多个分离操作，例如顺序或并行排序操作。
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公开(公告)号：US20120190105A1
公开(公告)日：2012-07-26
申请号：US13374899
申请日：2012-01-23
CPC分类号： C12M47/04 , B01L3/502761 , B01L7/52 , B01L2200/0652 , B01L2300/0816 , B01L2400/043 , B01L2400/0439 , B01L2400/0478 , B01L2400/0481 , G01N15/1459 , G01N2015/149
摘要： A disposable cartridge is described which is compatible with a MEMS particle sorting device. The disposable cartridge may include passageways which connect fluid reservoirs in the cartridge with corresponding microfluidic passageways on the MEMS chip. A flexible gasket may prevent leakages and allow the fluid to cross the gasket barrier through a plurality of holes in the gasket. Vents and septums may also be included to allow air to escape and fluids to be inserted by hypodermic needle. A MEMS-based particle sorting system using the disposable cartridge is also described.
摘要翻译： 描述了与MEMS颗粒分选装置兼容的一次性盒。 一次性盒可以包括将盒中的流体储存器与MEMS芯片上的相应微流体通道连接的通道。 柔性垫片可以防止泄漏，并允许流体通过垫圈中的多个孔穿过垫圈屏障。 还可以包括通气孔和隔膜，以允许空气逸出，并由皮下注射针插入液体。 还描述了使用一次性盒的基于MEMS的颗粒分选系统。
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公开(公告)号：US5530602A
公开(公告)日：1996-06-25
申请号：US84673
申请日：1993-06-29
摘要： A starting sequence is provided for a rotating disk data storage device by providing a low level sensing current to the spindle motor which is able to initiate rotation of the disk spindle assembly when, absent stiction between head and confronting disk surface, it is only necessary to overcome disk assembly inertia and head drag. A sensing device is provided to sense a back electromotive force (EMF) in the spindle motor windings which indicates the start of disk rotation when any stiction condition has been terminated. A sequence of alternating current pulse bursts are applied to the actuator motor to impart a dithering action to the heads which induces axial vibration of the disks to break the stiction between the heads and confronting disk surfaces. The initial burst is of low amplitude pulses and each succeeding burst is of progressively greater amplitude and the pulses of each burst are of constant or progressively varying frequency to afford some consecutive pulses approaching the resonant frequency of the disk modes of vibration to enhance the stiction breaking force. The sensing of a back EMF (indicating disk rotation and the termination of any stuck head condition) is used to terminate the start sequence and switch the spindle and actuator motors to the normal operational control of the drive.
摘要翻译： 通过向主轴电机提供低电平感测电流，为旋转磁盘数据存储装置提供启动顺序，主轴电机能够在不存在磁头和面对磁盘表面之间的位置时启动磁盘主轴组件的旋转，因此只需要 克服磁盘组件惯性和磁头阻力。 提供感测装置以感测主轴电动机绕组中的反电动势（EMF），其指示当任何静止状态终止时盘旋转的开始。 将交替脉冲脉冲序列施加到致动器电动机，以向磁头施加抖动作用，这引起磁盘的轴向振动，以破坏磁头和面对磁盘表面之间的粘结。 初始脉冲串是低幅度脉冲，并且每个后续脉冲串具有逐渐更大的幅度，并且每个脉冲串的脉冲是恒定的或逐渐变化的频率，以提供接近磁盘振动模式的谐振频率的一些连续脉冲，以增强静音破坏 力。 使用反EMF（指示盘旋转和任何卡头状态的终止）的感测来终止启动顺序，并将主轴和执行器电机切换到驱动器的正常操作控制。
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公开(公告)号：US08993311B2
公开(公告)日：2015-03-31
申请号：US13506892
申请日：2012-05-23
申请人： John S. Foster , Daryl W. Grummitt , John C. Harley , James P. Linton , Jaquelin K. Spong , Douglas L. Thompson
发明人： John S. Foster , Daryl W. Grummitt , John C. Harley , James P. Linton , Jaquelin K. Spong , Douglas L. Thompson
CPC分类号： C12M47/04 , B01L3/502761 , B01L7/52 , B01L2200/0652 , B01L2300/0816 , B01L2400/043 , B01L2400/0439 , B01L2400/0478 , G01N2015/1081 , G01N2015/149
摘要： A disposable cartridge is described which is equipped with a plurality of microfabricated particle sorting structures. The disposable cartridge may include passageways which connect fluid reservoirs in the cartridge with corresponding microfluidic passageways on the particle sorting structure. A flexible gasket may prevent leakages and allow the fluid to cross the gasket barrier through a plurality of holes in the gasket, allowing fluid to be transferred from the reservoirs to the microfabricated particle sorting structures. The plurality of particle sorting structures may be arranged in the disposable cartridge in order to perform multiple separation operations, such as a sequential or parallel sorting operation.
摘要翻译： 描述了配备有多个微加工颗粒分选结构的一次性盒。 一次性药筒可以包括将药筒中的流体储存器与颗粒分选结构上的相应的微流体通道连接的通道。 柔性垫片可以防止泄漏并允许流体通过垫圈中的多个孔穿过垫圈屏障，允许流体从储存器转移到微加工颗粒分选结构。 多个颗粒分选结构可以布置在一次性盒中，以便执行多个分离操作，例如顺序或并行排序操作。
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公开(公告)号：US08871500B2
公开(公告)日：2014-10-28
申请号：US13374898
申请日：2012-01-23
CPC分类号： G01N33/5005 , B01L3/502738 , B01L3/502761 , B01L2200/0652 , B01L2400/043 , B01L2400/0633 , C12M47/04
摘要： A MEMS-based system and a method are described for separating a target particle from the remainder of a fluid stream. The system makes use of a unique, microfabricated movable structure formed on a substrate, which moves in a rotary fashion about one or more fixed points, which are all located on one side of the axis of motion. The movable structure is actuated by a separate force-generating apparatus, which is entirely separate from the movable structure formed on its substrate. This allows the movable structure to be entirely submerged in the sample fluid.
摘要翻译： 描述了基于MEMS的系统和方法，用于将目标颗粒与流体流的其余部分分离。 该系统利用形成在基板上的独特的微加工可移动结构，其以旋转方式围绕一个或多个固定点移动，所述固定点都位于运动轴的一侧。 可移动结构由独立的力产生装置致动，该装置与其基板上形成的可移动结构完全分开。 这允许可移动结构完全浸没在样品流体中。
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10.发明授权Disk drive with controlled actuator oscillation for release of head carriers 失效磁盘驱动器具有控制执行器振荡以释放磁头载体
公开(公告)号：US5384675A
公开(公告)日：1995-01-24
申请号：US118537
申请日：1993-09-08
摘要： A magnetic recording disk drive has a startup routine that frees the recording head carriers and moves them to a parking location, such as load/unload ramp or a disk landing zone, if they are stuck to the disks when the drive motor is attempted to be started. If the drive motor does not achieve its operating speed at normal startup of the disk drive, thus indicating that static friction or other "stiction" forces are adhering the carriers to the disks, a series of alternating current pulses is applied to the actuator to dither the carriers at an initial frequency that is generally equal to or above the resonant frequency of the actuator system with stuck carriers. The frequency and amplitude of the pulses is swept downward from the initial frequency and amplitude and repeated until the drive motor rotates at its operating speed. The alternating current pulses that perform the dithering of the carriers have different amplitudes or durations so that a net force is applied to the actuator to move the carriers to the parking location.
摘要翻译： 磁记录磁盘驱动器具有启动程序，如果驱动电机试图成为磁盘时，它们会释放记录磁头托架并将其移动到停放位置，如加载/卸载斜坡或磁盘着陆区域 开始了 如果驱动电机在磁盘驱动器的正常启动时没有达到其运行速度，因此表明静摩擦或其他“静止”力将载体粘附到磁盘上，则一系列交流电脉冲施加到致动器以进行抖动 载波的初始频率通常等于或高于具有卡住的载波的致动器系统的谐振频率。 脉冲的频率和振幅从初始频率和振幅向下扫描，并重复，直到驱动电机以其运行速度旋转。 执行载波抖动的交流脉冲具有不同的振幅或持续时间，从而将净力施加到致动器以将载体移动到停车位置。
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